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6(7-7x)+3=-378
We move all terms to the left:
6(7-7x)+3-(-378)=0
We add all the numbers together, and all the variables
6(-7x+7)+3-(-378)=0
We add all the numbers together, and all the variables
6(-7x+7)+381=0
We multiply parentheses
-42x+42+381=0
We add all the numbers together, and all the variables
-42x+423=0
We move all terms containing x to the left, all other terms to the right
-42x=-423
x=-423/-42
x=10+1/14
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